* A possible bug or warning that occurs is that if the last two arachnotrons die at the same time, it may cause the stair step surrounding the exit in the center to rise twice, making the exit in the center become seemingly inaccessible, but if this happens, you can still access the exit by running across from the lowered northwest or northeast platforms.
* Not really a bug, but more of a warning. If this level is played on [[Skill level|Nightmare!]] difficulty or with the [[Parameter#-respawn|<tt>-respawn</tt>]] [[parameter]] set, the arachnotrons that endlessly respawn may cause the stair step that surrounds the center exit to continuously rise each time all of them die, making the exit in the center inaccessible.
* Not really a bug, but the backpack at the start of the level is actually ten backpacks placed on top of each other. Picking "it" up will thus give you a very large amount of ammo.
The alcove in the northwest corner contains a [[BFG9000]], a [[bulk cell]] and an additional exit switch (as the central exit is usually not reachable when using <tt>[[Parameter#-nomonsters|-nomonsters</tt>]] on deathmatch mode). However, this alcove is accessible only in [[deathmatch]] mode, after a player spawns inside and opens the door.
"Dead Simple" is the first official map in the ''Doom'' series whose name is not a noun or a noun phrase.